Automatic telephone message receiver and recorder



M. Kl-:lsER 2,005,788

AUTOMATIC TELEPHONE MESSAGE RECEIVER AND RECORDER June 25, 1935.

Filed Feb. 18, 1955 4 Sheets-Sheet 1 hm mmv ww W June 25, 1935. MKEISER v v2,005,788

AUTOMATIC TELEPHONE MESSAGE RECEIVER AND RECORDER Filed Feb. 18, 1953 4 sheetsheet 2 June 25, 1935. M, KEISER Y 2,005,788

AUTOMATIC TELEPHONE MESSAGE RECEIVER AND RECORDER V Filed Feb. 18, 1935 4 Sheets-Sheet 3 @fag/4.

June 25, 1935. M KE|SER 2,005,788

AUTOMATIC TELEPHONE MESSAGE RECEIVER AND RECORDER Filed Feb. 18, 1935 4 Sheets-Sheet v4 Patented June 25, 1935 n 'UNITED STATES PATENT OFFICEv AUTOMATIC TELEPHONE MESSAGE RE- CEIVER AND'RECORDER Morris Kaiser, New York, N. Y., assignor to Hixon-Keiser Patents Corporation, New York, N. Y., a corporation of New York Application February 18, 1933, Serial No. 657,414

16 Claims. (Cl. 179-6) 'Ihis invention relates to sound recording and or mouth and ear piece immediately after initiareproducing apparatus and has special reference tion of operation and to allow the hook to dropto an automatic telephone message receiver and or the mouth and ear piece to be seated upon recorder. conclusion of the operation.

Devices have been invented for the purpose of A fourth important object of the invention is 5 automatically receiving and recording messages to provide a novel pick-up arrangement for use in connection with a subscribers telephone inwith a subscribers telephone equipment to restrument but hitherto such devices have necesceive impulses fromthe electro-magnetic or elecsitated conductive connection between the wiring tro-static iield occurring in the vicinity of all parts l0 of the telephone system and the apparatus for of such equipment and to cause such impulses to l0 such reception and recording. For various effect operation of the call answering apparatus reasons not necessary here to discuss, such directand the message receiving apparatus :Ecfming connection to the telephone circuits is objectionparts of this invention. able and the operating companies generally refuse A fifth important object of the invention is to to allow the use of such apparatus. provide an impi'OVed answering means 1'01 Se in 15 One important object of the present invention such apparatus. is to provide a novel arrangement of apparatus A sixth important object of the invention is to for this purpose wherein there is no conductive provide an improved means for lifting the movelectrical connection between the telephone. cirable part of a subscribers telephone instrument 2o cuits and the circuits involved in the invention to establish the telephone talking circuit. 20 so that the device may be installed without in A seventh important object of the invention is any way interfering with the present telephone to provide a novel arrangement of electrical cirinstallations, cuits and controls for use in connection with an In my prior application for patent on an Autoapparatus of this character.

matic telephone message receiver and recorder, With the above and other objects in view, as 25 tiled on September 20, 1932 and bearing the Serial will be presently apparent, the invention consists Number 634,025,1-1ow Patent No. 1,973,081, granted in general of certain novel combinations or ele- Sept. 11, 1934, I have described an apparatus in ments and arrangements 0f Parts hereinafter which the initiation of the sequence of operations fully described, illustrated in the accompanying in the device is established through the eiiect of drawings and Speciiieally claimed. 30

sound waves. While this apparatus constitutes In the accompanying drawings like Characters a marked advance in the art over those devices of reference indicate like parts in the several conductively or mechanically connected to the viewsl anditelephone system it has been 'found that it has Figure 1 iS a general diagrammatic View 0i one a tendency to start operating from causes other form 0f the invention Showing the Wiring thereof. 35

than the ringing of a vtelephone bell. For in- Figure 2 is a detail wiring diagram illustrating stance, it has been found that the operation of a modication of certain parts of the arrangean air hammer such as is used in riveting during meut 0f Figure 1.

the erection of steel structures will, under cer- Figure 3 iS a Semi-diagrammatie detail Show- 40 tain conditions, initiate the operation cycle. ing one arrangement 0f pick-11p as used herein. 4o

A second important object of the present in- Figure 4 iS a View Similar t0 Figure 3 but Showvention is to provide an improved device of this ing a second arrangement 0f the pick-up. character wherein the operation cycle will be Figure 51S a View Similar t0 Figure 3 but Showinitiat-ed by the electrical impulses associated with ing a third arrangement of the pick-up. the ringing of the call bell and wherein sound Figure 6 is a view showing a modied pick-up 45 will have no eiect in initiating such cycle of opoperating electrostatically. erations. Figure 7 is a view showing a fourth form of A third important object of the invention is field pick-up. to provide a novel arrangement of such appara- Figure 8 is a view showing a l'orm of pick-up tus whereby the telephone instrument remains in wherein the call box casing is employed as means 50 normal condition with the receiver hook depressed actuated by the electro-static eld to form the or (in so called French type telephones) with pick-up. the mouth and ear piece on the stand except Figure 9 is a view of a modliled electro-magduring the reception of the message, the apparaneticfleld pick-up employing a sound detector. tus being arranged to automatically lift the hook Figure 10 is a. view showing a pick-up adapted 55 *Figure 14.

In the general embodiment of the present invention as shown in the main wiring diagram illustrated in Figure 1 there is disclosed certain standard equipment which includes the bell or call box Il and transmitter II which are commonly used in telephone systems and which here represent such parts of a telephone system. This call box and transmitter form no part of the present invention and are here shown in order that the manner o! utilizing the invention in con- 4 junction with such a system may be fully understood. Also there is indicated at I2 an ordinary audioampliiier. The construction of such ampliilers is old and well known and it is not deemed necessary here to disclose the details of the amplier since such details form no part of the present invention. All such ampliers have input, output and power connections and in this case the power lines I3 and I4 are shown connected to the amplifier by wiresor other conductive connections I5.

At I0 is a pick-up which may be either of the electro-magnetic type or the electro-static type and is in no way conductively or physically connected to any part of the telephone system. For the purposes of this application this pick-up will be termed a iieid actuated pick-up and it is to be understood that this term means a pick-up actuated soleiy by a ileld which may be either electromagnetic or electro-static and which has no physical nor conductive connection with any part of the telephone system proper. This pick-up is conductively connected to the input of the ampliiier by conductors such as the wires I1. The pick-up is shown in this gure as arranged adjacent the box Il to receive the stray eld which surrounds the box whenever the ringing or talking circuit oi. the telephone line is operated. However. it is to be understood that a iield pickup for this purposermay be located anywhere adjacent the telephone lines or apparatus since all such lines and apparatus are surrounded by stray ilelds. Thin, for the purposes oi' this invention it is merely that the pick-up be located somewhere in the ileld of the telephone system.

Leading from the output end of the amplier areconductorwires Iland I3. Thewire Ilis connectedtooneterminaloitheprimarywindingotatransiormernandthewire I3isconnectedtotheotherterminalofthisprimary throughavariable2l. At22 isathree element tube having the usual nlament, grid and plate. One terminal of the transformer secondaryisconnectedto the grid ofthe tube by-a wire 23. The wire'l4 is connected to one terminal of theillamentbyawireandresistanceuandthe wirel3isconnectedtotheotherterminaloithe` illament by a wire having aresistance 25 interposed therein. The other terminal of the transformer secondary is connected by a wire 21 to a variable contact on the resistance 26.

A relay magnet 23 has one terminal connected to the plate oi the tube 22 by a wire 23 and its other terminal connected by a wire 3l with the wire I4, a condenser 3l being bridged across the wires 2l and 30. This magnet 28 actuates an armature contact 32 to cause this contact to engage a xed contact 33 upon energization of the magnet 23 and the fixed contact 33 is connected by a wire 34 with the wire I4. The contact 32 is connected by a wire 351with one terminal oi a relay magnet 36 which has its other terminal connected by a wire 31 with the wire I3. The armature 38 for this magnet is a heavily loaded spring armature which vibrates between two ilxed contacts 39 and is connected by the wire 4l with the wire I4. The armature is so proportioned and loaded that, after de-energizatlon of thev magnet 36 this armature will continue to alternately engage the contacts 39 for a predetermined time period, for instance, four seconds. The contacts 39 are connected in multiple by a wire 4I with one terminal of a relay magnet 42 and the other terminal of this magnet is connected by a wire 43 with the wire I3. The magnet 42 carries on the armature end of its core, a heavy single turn of copper 44, a so-calied s1ug." 'I'he magnet is then, in effect, a transformerwith a shortcircuited secondary oi extremely low resistance. When the circuit is closed for the primary coil of the transformer, and the current begins to rise, andthe core begins to be magnetired, a comparatively heavy current is induced in the copper slug 44. ,This current in the slug in turn produces its own magnetic eld but in a direction opposite to the magnetic ileld produced by the current in the primary coil. The eiect of the slug 44 is therefore to produce a lag in the magnetization of the core of this magnet 42. The action is similar when the circuit of the primary is opened, and in this case, the eiect is to retard the demagnetization. In short, the purpose of the slug 44 is, in eilect, to introduce a large magnetic reluctance in the circuit o1' the magnetonly for the time/during which the current in the magnet coil is either rising or falling. This produces a slow-moving relay action and the slug 44 constitutes a reluctance coil or winding. An armature 45 is moved by energization of this magnet 42 into engagement with a ilxed contact 46` which is connected by a wire 41 with the wire I4. The arrangement oi the amature 45 and contact 46 is preferably of the vacuumccntact type. A wire 48 connects the armature 45 with a relay armature 494 which normally engages a ilxed contact 5I.

A motor 5| has one terminal connected by a wire 52 with the contact 5II and thev other terminal ot this motor is connected by a wire 53 with the wire I3. The motor 5I drives amandrel 53 whereon is mounted a phonogtaphic record 54 having recorded thereon speech to the eil'ect that no person is present at the receiving subscriber's station and that any message spoken will be recorded. A sound box Il, equipped with the usual reproducer needle, is caused to traverse the record by a screw 56 driven by the motor the transmitter II.

:,oomss through suitable gearing. A small tone horn 51 is connected to this sound box and rests beneath 'Ihe horn 51 is connected to the sound box in a manner hereinafter described and is movable independently oi' the sound box. As is well known, it is necessary, to establish the talking circuit of the telephone to lift the telephone hook in the standard formof telephone or the combined receiver and tran:mitter in the so called French form. The horn 51, resting beneath the instrument is movable to eil'ect such lifting by means' of a solenoid 58 which has its core connected to one arm of a lever 59 carrying the horn 51 so that upon energization of the solenoid the horn, and consequently the movable part of the telephone instrument, is lifted. One terminal of the solenoid 58 is connected to the wire 48 by a wire 8| and the other terminal of the solenoid is connected by a wire 68 with the wire 53, the solenoid thus being initially in multiple with the motor 5I. Normally, by means hereinafter described, the needle of the sound box is ,held normally out of contact with the record 54 and out of feed screw control by means hereinafter described in detail, such means including a magnet 62 which, when energized, brings the needle into contact and the feed arrangement into service. The magnet 62 is connected by a wire 63 with the wire 52 and by a wire 64 with the wire 53, being thus in multiple with the motor. A spring 65 normally holds the 4sound box at the starting end of the record 54.

On the screw 56 is a nut or carriage (see Fig. 14) carrying a movable contact 66 which ls fed along by the screw 56 until, at the time the needle reaches the end of the record, it contacts with a fixed contact 61. The contact 66 is connected by a wire 68 with the wire 48 and the contact 61 is connected by a wire 69 with a contact 18 and with one terminal of the relay magnet 1I which controls the armature 49 and which has its other terminal connected by a wire 12 to the wire I3. The magnet 1I, when energized, moves the armature 49 into engagement with the contact 10 and with a vcontact 13, breaking thecontact at 50 simultaneously. 'I'he contact 13 i; connected by a wire 14 with one terminal of a motor 15 having its other terminal connected by a wire 'I6 with the wire 53. 'I'his motor 15 drives the mandrel 11 of a phonographic recording device having the usual recording sound box 18 and the mouth piece 19 connected acoustically thereto. A speaker unit 88 confronts this mouth piece and is connected by wires 8l with the wires I8 and I9.

Inasmuch as the general operation of the invention can be Well understood from the figure just described it is though well to describe this general operation before entering into anyfdescription of modifications or details of construction. In order to make clear the operation it is assumed that the device is in use at a telephone subscriber-s station with noone present to answer the instrument. A call is sent through the telephone system for this station. There is, of course, primarily a signalwhich produces afield causing the field pick-up I6 to function and the current from this pick-up passes to the amplifier I2 over the wires I1. These current impulses are amplified in the* amplifier which is constantly receiving power over the wires'I5 from the power lines I3 and I4. Amplified impulses issue from the'ampliiier over the wires `I8 and I9fand a predetermined portion of th'ese impulses pass to the transformer 28 and thenceto the tube' 22. "Due, in this i i'orm of the connections, to the biasing of the grid circuit only the positive -impulses aiiect the plate circuit and thus effect a series of impulses through the magnet 28 which causes a succession of closings of the armature 32 on the contact 33. This, in' turn, causes a series of energizations of the magnet 36. Each time the armature 32 closes on the contact 33, the magnet 36 is energized, and the armature 38 is drawn all the way over, making connection with the front contact 39. When this contact 38 39 is made, the magnet 42 is energized, drawing over the armature and closing the contact 45 46. When the armature 32 is released, the contact 32 33 is opened, and, the magnet 36 is de-energized. The armature 38 is released, but, due to its construction as a vibrator, it vibrates and alternately makes contact with the front and back contacts 39. This sends a series of current impulses through the magnet 42. These vibrations of the armature 38, and consequently the impulses of current, persist for an adjustable time, say four seconds, and due to the special arrangement of this magnet core, these magnetizing impulses are sustained, the armature 45 is held over and the contact 45 46 remains closed, until the vibrations of armature 38 die down and the armature 38 comes to a standstill and the contacts 38 39 are positively opened. It is therefore evident that for every momentary closing of the contact 32 33, the contact 45 46 will remain closed for any preadjusted time afterward, say four seconds. Current will now flow from the wire I4 through wire 41, contact 46, armature 45, wire 48, armature 49, contact 58, wire 52, motor 5I and wire 53 to wire I3. Simultaneously, the solenoid 5,8 and magnet 62 will be energized, these being, as previously described, in multiple with the motor. The solenoid 58 will lift the movable part of the telephone instrument and establish the talking circuit and the magnet 62 will pull the needle down into contact with the record 544 driven by the motor. The record will then speak and the person calling will be in- As the end of this message is reached the contact 66 engages the Contact 61 and current will flow from line I3 through wire 12, magnet 1I, wire 69, contact 61, contact 66, wire 68, wire 48, armature 45, contact 46 and wire 41 to the line I4. This will energize the magnet 1I which will attract the armature 49, break the contact at 59 and establish contact at 18 and 13. Since thecontact `is broken at current will no longer be supplied to the motor 5I and solenoid 62. The motor will stop, the needle of the reproducer will lift off the record and the reproducer nut will disengage from the screw and be restored to starting position by the spring 65, thus restoring the contact 66 to initial position as will be later explained. The calling subscriber may now speak any message he desires into his telephone.

The' current impulses due to his speech will continue to affect.

armature 45, contact 46 and Wirel 41 to the linel I4. d y

The magnet will thus hold thearmaturein l,en-

gagement with contacts 10 and 13 `so that current y,

will also iiow from line I3 through wire ,53, wire 16, motor 15, wire 14, contact.l13,farmature 149,

Wire 48, armature 45, contact 46 and wire 41 to line I4. The vmotor'15 will now operate Jand' im- I pulses due to any message spoken by the calling subscriber will be picked up by the pick-up I8 and be transmitted to the input end of the amplifier. The ampliiied message impulses will be transmitted from the amplifier over the wires I8 and I9 and the wires 8| to the speaker unit 80 where they will be transformed into sound waves and be transmitted through the horn 19 to the recording unit 18 which' acts to cut the record 82 in accordance therewith thus recording the spokenmessage. When the calling subscriber ceases talking there will no longer be a succession of impulses affecting the tube 22 so that the armature 32 will remain out of engagement with the contact 33. 'Ihis will effect continuous de'-l energization of the magnet 38 so that the amplitude of vibration of the armature 38 will decrease until it no longer touches the contacts 39 whereupon the magnet 42 will de-energize and contact will be broken between the armature 45 and contact 48. This breaks both the circuit of the motor 11 and the circuit of the solenoid 59 so that the motor 11 stops and the movable part of the telephone instrument is restored to the normal position to break the talking circuit and establish a ringing circuit. Also the magnet 1| is de-energized and the armature 49 reengages the contact 50. Thus the device is set ready for a second operation. It is to be understood that the armature 38 is so proportioned and loaded that some time, say four seconds, will elapse after de-energization of magnet 38 before this armature ceases to engage the contacts 39. Consequently a momentarycessation of speech by the calling subscriber willnot cause stoppage of the motor or restoration of the ringing circuit. Obviously, if the calling subscriber does not care to leave a message the motor and solenoid circuit will be broken as just described upon completion of the message to him after lapse of the time for which the armature 38 is set. i

Inthe modication disclosed in Figure 2 the wiring and other parts are identical with what is shown in Figure 1 except in certain particulars which will now be described. The wire 21 is replaced by a wire 21 which is connected directly to the power line I3. A wire 83 leads from the plate of the tube 22 to one terminal of the primary winding of a transformer 84 and the other terminal of this primary winding is connected by a wire 85 with the wire |4. The secondary winding of this transformer 84 has its terminals connected to the terminals of the. magnet 28 by wires 88.

In Figures 3 to 5 a pick-up coil adapted to be affected by the electro-magnetic field around the telephone equipment is shown at 81, the coil being arranged above the call box in Figure 3, below the box in Figure 4 and on one side of the box in Figure 5.

In Figure 6 the pick-up is shown as a plate 88 and in Figure 7 is a coil 89, these parts being affected by the field in the vicinity of the call box.

In Figure 8 the metal casing of the box itself is used as an electro-statically energized pick-up.

In Figure 9 a sound detector 90 of the electrodynamic type is connected by wires 9| to a coil i 92 inductively associated with the pick-up coil 93 connected to the amplifier intake as usual.

Figures 10 and 11 show electro-magnetic pickup coils 94 and 95 adapted for insertion-of the receiver of a French and standard telephone instrument respectively.

In Figures 12 and 13 is shown an electro-static pick-up consisting of a plate 98 whereon the vtelephone instrument may be set, a French telephone being shown in Figure 12 and a standard telephone being shown in Figure 13.

Considering now the constructlonal details shown in Figures 14 to 18 inclusive it will be seen that there is provided a casing 91 wherein is located the motor 5|, solenoids 58 and 82, mandrel 53 and speaker record 54, sound box 55 and other parts associated therewith. l

The solenoid 58 supports a'bracket 98 to the upper end of which the lever 59 is fulcrumed intermediate its ends. 'I'he solenoid core is attached to one end of this lever and fromthe other end of the lever depends a link 99 carrying at its lower end a bar |00 provided with collars |0| at its ends.' The horn 51 extends through the front wall of the casing and is connected by a flexibly jointed sound tube |02 with the reproducer box 55. As here shown the arrangement has been made for a French telephone instrument having a base B and transmitter-receiver TR. When in position the mouth of the horn 51 lies below one end of the part TR. and an idle horn |03.

has its mouth below the other end of this vpart and extends into the casing 91 to a universal jointed support |04. 'I'he collars |0| surround the necks of the horns 51 and |03 and, when the solenoid 58 is energized the mouth ends of the horns and the instrument TR are lifted thereby breaking the calling circuit of the telephone and establishing the talking circuit. In order to permit adjustment of the solenoid to obtain proper lifting movement of the instrument TR, this solenoid is supported between brackets |05 by screws |08 passing through vertical slots |01 in said brackets.

The motor 15 drives a counter-shaft |08 through a speed reducing drive |09 and the counter-shaft'drives the mandrel 53 through a speed reducing drive ||0. 'I'he screw 58 is driven from the counter-shaft by a drive III. Over the solenoid 82 extends a lever ||2 pivoted at one end to a bracket I I3 mounted on an end wall of the casing 91. The core oi' the solenoid 82 is connected to the lever at about the middle thereof and the other end of the lever is provided with a yoke which straddles the reproducer box 55. This box is provided with pins I4 which pass through slots ||5 formed in the yoke arms. A tension spring ||8 has itslower end attached to the lever ||2 and its upper end attached to the top of the casing 91 and normally holds the reproducer needle clear of the record 54. Extending from the reproducer box`is an arm ||1 carrying at its free end a half-nut ||8 which is normally held raised above the screw 58 but which, upon energizatlon of the solenoid 82, is moved down into engagement with the screw as shown in the detail figures. Attached to -the arm ||1 is one end of the restoring spring 85 and the other end of this spring is attached to a suitable post in the casing. The nut 118 carries the contact 66, this contact being, of course, insulated from the nut. The contact 81 is mounted on the casing wall in the path of the contact 88 when the nut is in engagement with the screw.

' From the operation as previously described it will be clear that upon a signal being picked up the solenoids 58 and 82 will be energized and the motor 5| started. The solenoid 58 will cause the instrument 'I'R to lift and establish the talking circuit. At the same time the solenoid 82 will pull down the lever ||2 and bring the reproducer needle into engagement with the record 54 and the half-nut into engagement with the screw 58. The reproducer will now be fed across the record, this being permitted by reason of the pin and slot connection between the reproducer box 55 and lever H2. 'I'he contact 55 moves with the half-nut and, when the record 54 has finished talking. engages he contact 51. This effects energization of the change over magnet 1 I, breaks the circuits through the motor 5I and solenoid 52 as previously described. The spring I I5 now lifts the horn H2 and the spring 55 restores the reproducer box 55, half-nut H8 and contact 55 to normal starting position.

For the purpose of making the language of the claims clear certain legends have been placed upon Figure 1 of the drawings and it will there, be seen that the flrst three relays are termed sustaining relays and the fourth relay is termed a change over relay.

There has thus been provided a simple and eiiicient device of the kind described and for the purpose specified.

It is obvious that many minor changes may be made in the form and construction of the invention Without departing from the material principles involved. It is not, therefore, desired to confine the invention to the exact form herein shown and described but it is desired to include all forms which properly come within the scope of the appended claims.

Having described my invention, I claim:

1. In apparatus of the class described, a field t pick-up, an amplier to which said pick-up delivers current impulses, sustaining relays and circuits therefor receiving current from said amplifier, a speaking record, a recorder, electromotive means for operating the speaking record and recorder, a change-over relay receiving current through one of said sustaining relays and including an electro-magnet, a normally closed circuit receiving current through the change-over relay and arranged to cause the electro-motive means to actuate the speaking record upon energization of the sustaining relays, a change-over circuit supplying said relay magnet with current upon completion of the operation of said speaking record, and a normally open circuit receiving current through the change-over relay and arranged to cause the electro-motive means to cause actuation of the recorder, the normally closed circuit beingopened and the normally opencircuit being closed upon energization of the said relay magnet.

2. In apparatus of the class described, a field pick-up, an amplifier to which said pick-up delivers current impulses, sustaining relays and circuits therefor receiving current from said amplifier, a speaking record, a recorder, electromotive means for operating the speaking record and recorder, a change-over relay receiving current through one of said sustaining relays and including an electro-magnet, a normally closed circuit receiving current through the change-over relay and arranged to cause the electro-motive means to actuate the speaking record upon energization of the sustaining relays, a change-over circuit supplying said relay magnet with current upon completion of the operation of said speakclosed uponenergization ofthe ksaid relay vmagnet, and circuit means closed by the energization cuits controlled by said change-over relay being supplied with power upon energization of rthe sustaining relays, said change-over relay normally closing the first motor circuit and opening said first motor circuit and closing the second motor circuit upon energization of said magnet, and

means actuated by the first motor to close a circuit through said magnet upon completion of the operation yof the speaking record.

4. In apparatus of the class described, a fleld pick-up, an amplifier having its input connected to said field pick-up, sustaining relays and circuits therefor actuated by current output from the amplifier, a speaking record, a motor for actuating said speaking record, a recorder, a second motor for actuating said recorder, a motor circuit for each of said motors, a change-over relay including an actuating electro-magnet, the circuits controlled by said change-over relay being supplied with power upon energization of the sustaining relays, said change-over relay nor. mally closing the first motor circuit and opening said rst motor circuit and closing the second motor circuit upon energization of said magnet, means actuated by the first motor to close a circuit through said magnet upon completion of the operation of the speaking record, and circuit means closed by the energization of said relay magnet and arranged to maintain energization of the magnet during energization of the sustaining relays.

5. In apparatus of the class described, a field pick-up, an amplifier having its input connected to said field pick-up, sustaining relays and, circuits therefor actuated by current output from the amplifier, a speaking record, a motor for actuating said speaking record, a recorder, a second motor for actuating said recorder, a motor circuit for each of said motors, a change-over relay including an actuating electro-magnet, the circuits controlled by said change-over relay being supplied with power upon energization of the sustaining relays, said change-over relay normally closing the first motor circuit and opening said first motor circuit and closing the second motor circuit upon energization of said magnet, means actuated by the first motor to close a circuit through said magnet upon completion `of the operation of the speaking record, circuit means closed by the energization `of said relay magnet and arranged to maintain energization of the magnet during energization of the sus ranged to vlift a telephone instrument to estab' lish its talking circuit, and means. for conveying sound impulses from the talking record to the telephone instrument. n f e 6. In apparatus of the'class, described, a field .pick-up, an amplifier having its-,input connect.

ed to said field pick-up, sustaining relays and circuits therefor actuatedbyv current l output from the amplifier, a speaking record, a motor 5 circuits controlled by said change-over relay being supplied with power upon energization of the sustaining relays, said change-over relay normally closing the first motor circuit and opening said rst motor circuit and closing the'second motor circuit upon energization of said magnet, means actuated by the first motor to close a circuit through said magnet upon completion of the operation of the speaking record, circuit means closed by the energization of said relay magnet and arranged to maintain energization of the magnet during energization of the sustaining relays, electro-magnetic means controlled by one of said sustaining relays and arranged to lift a telephone instrument to establish its talking circuit, a reproducer box and needle movable to bring the needle into and out of engagement with the speaking record, and electro-magnetic means in parallel with the first motor and arranged to cause engagement of the needle and record upon energization of said first motor and to cause lifting of the needle out of said engagement upon opening of the circuit for the first motor.

7. In apparatus of the class described, a field pick-up, an amplifier having its input connected to said field pick-up, sustaining relays and circuits therefor actuated by current output from `the amplifier, a speaking record, a motor for actuating said speaking record, a recorder, a second motor for actuating said recorder, a motor circuit for each of said motors, a changeover relay including an actuating electro-magnet, the circuits controlled by said change-over relay being supplied with power upon energization of the sustaining relays, said change-over relay normally closing the first motor circuit and opening said first motor circuit and closing the second motor circuit upon energization of said magnet, means actuated by the first motor to close a circuit through said magnet upon completion of' the operation of the speaking record, circuit means closed by the energization of `said relay magnet and arranged to maintain energization of the magnet during energization of the sustaining relays, said recorder having a sound receiving horn associated therewith, and a speaker unit connected to the output of the amplifier and confronting said sound receiving horn.

8. In apparatus of the class described, a field pick-up, an amplifier having its input connected to said field pick-up, sustaining relays and circuits therefor actuated by current output from the amplifier, a speaking record, a motor for actuating said speaking record, a recorder, a second motor for actuating said recorder, a motor circuit for each of said motors, a change-over relay including an actuating electro-magnet," the circuits controlled by said change-over relay being supplied with power upon energization of the sus- 'taining relays, said change-over relay normally closing the first motor circuit and opening said first motor circuit and closing the second vmotor circuit upon energization of said magnet, means actuated, by the first motor to close a circuit through said magnet upon completion of the operation of the speaking record, circuit means .closed by the energization of said relay magnet and arranged to maintain energization of the magnet during energization of the sustaining relays, said recorder having a sound receiving horn associated therewith, a speaker unit connected to the output of the amplifier and confronting said sound receiving horn, electro-magnetic means controlled by one of said sustaining relays'and arranged to lift a telephone instrument to establish its talking circuit, and means for conveying sound impulses from the talking record to the y telephone instrument.

9. In apparatus of the class described, a field pick-up, an amplifier having its lnputrconnected to said field pick-up, sustaining relays and circuits therefor actuated by current output from the amplifier, a speaking record, a motor for ac- A tuating said speaking record, a recorder, a second motor for actuating said recorder, a motor circuit for each of said motors, a change-over relay including an actuating electro-magnet, the circuits controlled by said change-over relay being supplied with power upon energization of the sustaining relays, said change-over relay normally closing the first motor circuit and opening said first motor circuit and closing the second motor circuit upon energization of said magnet, means actuated by the first motor to close a circuit through said magnet upon completion of the operation of the speaking record, circuit means closed by the energization of said relay magnet and arranged to maintain energization of the magnet during energization of the sustaining relays, said recorder having a sound receiving horn associated therewith, a speaker unit connected to the output of the amplifier and confronting said sound receiving horn, electro-magnetic means controlled by one of said sustaining relays and arranged to lift a telephone instrument to establish its talking circuit, a reproducer box and needle movable to bring the needle into and out of engagement with the speaking record, and electro-magnetic means in parallel with the first motor and arranged to cause engagement of the needle and record upon energization of said first motor and to cause lifting of the needle out of said engagement upon opening of the circuit for the first motor.

10. In apparatus of the class described, an audio-frequency amplifier, sustaining relays and circuits therefor connected to the output of said amplifier, a field actuated pick-up conductively connected to the input of said amplifier and being located adjacent a telephone line but without any physical or conductive connection with said line, said pick-up being adapted to receive the currents emanating from the telephone line whenever the ringing or talking circuit of said line is operated and to utilize said currents to operate said sustaining relays through the intermediary of said amplifier, a translating device connected to the output of said amplifier, a recorder associated with said translating device, a

motor for actuating said recorder, and a motor with said translating device, a motor for actuat- 75 time subsequent to the cessation of energization of the sustaining relays.

12. In apparatus of the class described, a field pick-up, an ampliiier to which said pick-up delivers current impulses, sustaining relays and circuits therefor actuated by current output from said ampliiier, a recorder, said recorder having a sound receiving horn associated therewith, a speaker unit connected to the output of said amplier and confronting said sound receiving horn, a motor for actuating said recorder, and a motor circuit for said motor to wluch power is supplied upon energization of the sustaining relays, said sustaining relays being adapted to maintain the supply of power to said motor circuit for a predetermined time subsequent to the cessation of energization of the sustaining relays.

13. In apparatus of the class described, an ampliiier having its input coupled to a telephone line, a translating device connected to the output of said amplifier, a recorder associated with said translating device, a speaking record, electro-motive means for operating the speaking record and the recorder, sustaining relays and circuits therefor actuated by current output from said amplifier, a change-over relay receiving current through one of said sustaining relays and including an electro-magnet, a normally closed circuit receiving current through the changeover relay and arranged to cause the electromotive means to actuate the speaking record upon energization of the sustaining relays, a change-over circuit supplying said relay magnet with current upon completion of the operation of said speaking record, and a normally open circuit receiving current through the changeover relay and arranged to cause the electromotive means to cause actuation of the recorder, the normally closed circuit being opened and the normally open circuit being closed upon energization of the said relay magnet.

14. In apparatus of the class described, an ampliiier having its input coupled to a telephone line, a translating device connected to the output of said ampliiier, a recorder associated with said translating device, a speaking record, a motor for actuating said speaking record, a second motor for actuating said recorder, a motor circuit for each of said motors, sustaining relays and circuits therefor actuated by current output from said ampliiier, a change-over relay including an actuating electro-magnet, the circuits controlled by said change-over relay being supplied with power upon energization of the sustaining relays, said change-over relay normally closing the rst motor circuit and opening said rst motor circuit and closing theV second motor circuit upon energization of said magnet, and means actuated by the rst motor to'close a circuit through said magnet upon completion of the operation of the speaking record.

15. In apparatus of the .class.described, an ampliiler having its input coupled to a telephone line, a translating device connected to the output oi' said amplier, a recorder associated with said translating device, a speaking record, a motor for actuating said speaking record, a second mutor for actuating said recorder, a motor circuit for each of said motors, sustaining relays and circuits therefor actuated by current output from said amplifier, a change-over relay including an actuating electro-magnet, the circuits controlled by said change-over relay being supplied with power upon energization of the sustaining relays, said change-over relay normally closing the first motor circuit and opening said lirst motor circuit and closing the second motor circuit upon energization of said magnet, means actuated by the iirst motor to close a circuit through said magnet upon completion of the operation of the speaking record, circuit means closed by the energization of said relay magnet and arranged to maintain energization of the magnet during energization of the sustaining relays, electro-magnetic means "controlled by one of said sustaining relays and arranged to lift a telephone instrument to' establish its talking circuit, and means for conveying sound impulses from the talking record to the telephone instrument. Y

16. In apparatus of the class described, anamplifler having itsl input coupled to a telephone line, a translating device connected to the output ofl said lampliiier, a recorder associated with said translating device, a speaking record, a motor for actuating said speaking record. a second motor for actuating said recorder, a motor circuit for -each of said motors, sustaining relays and circuits thereforactuated by current output from said amplier, a change-over relay including an actuating electro-magnet, the circuits controlled by said change-over relay being supplied with power upon energization of the sustaining relays, said change-over relay normally closing the rst motor circuit and opening said rst motor circuit and closing the second motor circuit upon energization of said magnet, means actuated by the first motor to close a circuit through said magnet upon completion of the operation of the speaking record, circuit means closed by the energization of said relay magnet and arranged to maintain energization of the magnet during energization ofthe sustaining relays, electro-magthe needle and record upon energization of said iirst motor and to cause lifting of the needle out of said engagement upon opening of the circuit for the first motor,

MORRIS KEISER. 

